/*
 * This software code is (c) 2010 T-Mobile USA, Inc. All Rights Reserved.
 *
 * Unauthorized redistribution or further use of this material is
 * prohibited without the express permission of T-Mobile USA, Inc. and
 * will be prosecuted to the fullest extent of the law.
 *
 * Removal or modification of these Terms and Conditions from the source
 * or binary code of this software is prohibited.  In the event that
 * redistribution of the source or binary code for this software is
 * approved by T-Mobile USA, Inc., these Terms and Conditions and the
 * above copyright notice must be reproduced in their entirety and in all
 * circumstances.
 *
 * No name or trademarks of T-Mobile USA, Inc., or of its parent company,
 * Deutsche Telekom AG or any Deutsche Telekom or T-Mobile entity, may be
 * used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" AND "WITH ALL FAULTS" BASIS
 * AND WITHOUT WARRANTIES OF ANY KIND.  ALL EXPRESS OR IMPLIED
 * CONDITIONS, REPRESENTATIONS OR WARRANTIES, INCLUDING ANY IMPLIED
 * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
 * NON-INFRINGEMENT CONCERNING THIS SOFTWARE, ITS SOURCE OR BINARY CODE
 * OR ANY DERIVATIVES THEREOF ARE HEREBY EXCLUDED.  T-MOBILE USA, INC.
 * AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY
 * LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE
 * OR ITS DERIVATIVES.  IN NO EVENT WILL T-MOBILE USA, INC. OR ITS
 * LICENSORS BE LIABLE FOR LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
 * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES,
 * HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT
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 * INC. HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 *
 * THESE TERMS AND CONDITIONS APPLY SOLELY AND EXCLUSIVELY TO THE USE,
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 * CODE OR ANY DERIVATIVES THEREOF, AND ARE SEPARATE FROM ANY WRITTEN
 * WARRANTY THAT MAY BE PROVIDED WITH A DEVICE YOU PURCHASE FROM T-MOBILE
 * USA, INC., AND TO THE EXTENT PERMITTED BY LAW.
 */

package javax.microedition.ims.core;

import javax.microedition.ims.StackOuterErrorDefaultImpl;
import javax.microedition.ims.common.Consumer;
import javax.microedition.ims.common.ErrorHandler;
import javax.microedition.ims.common.IMSMessage;
import javax.microedition.ims.common.ProducerConsumerPipe;
import javax.microedition.ims.core.connection.ConnState;
import javax.microedition.ims.core.connection.NetworkType;

/**
 * User: Pavel Laboda (pavel.laboda@gmail.com)
 * Date: 16.6.2010
 * Time: 17.45.32
 */
public final class NetworkAwareProducerConsumerPipe extends ProducerConsumerPipe<IMSMessage> {
    private final StackContext stackContext;
    private final ErrorHandler<StackOuterError> errorHandler;

    public NetworkAwareProducerConsumerPipe(
            final StackContext stackContext,
            final ErrorHandler<StackOuterError> errorHandler,
            final Consumer<IMSMessage> consumer) {

        super(consumer);
        this.stackContext = stackContext;
        this.errorHandler = errorHandler;
    }


    
    public final void onPop(final IMSMessage msg) {
        final ConnState connState = stackContext.getEnvironment().getConnectionManager().obtainConnStateDirectly();
        final NetworkType type = stackContext.getEnvironment().getConnectionManager().obtainNetworkTypeDirectly();

        final boolean badNetworkType = NetworkType.UNKNOWN == type || NetworkType.NONE == type;
        final boolean goodNetworkState = connState == ConnState.CONNECTED;
        final boolean networkAvailable = !badNetworkType && goodNetworkState;

        if (networkAvailable) {
            super.onPop(msg);
        }
        else {
            final StackOuterError outerError = new StackOuterErrorDefaultImpl(
                    StackOuterErrorType.NO_NETWORK,
                    "Network not available. Network type: " + type + " connection state: " + connState,
                    msg,
                    null
            );
            errorHandler.handleError(outerError);
        }
    }

    
    public String toString() {
        final StringBuilder sb = new StringBuilder();
        sb.append("NetworkAwareProducerConsumerPipe");
        sb.append("{}");
        return sb.toString();
    }
}
